Same question as the CS2/CS3 thread. Do you find the new version of Flash and DW to be worth the upgrade? Or maybe just Flash and not DW? I am also asking as well from the standpoint of your 'real-world' daily work.
Aside from the fact that it's faster, one of the features that I found worth the upgrade is exporting quicktime format, CS3 can handle conversions of nested movieclips, actionscript-generated content and run-time effects such as shadows and blurs. also the animation-to-actionscript feature. that's for Flash, haven't used DW. just my opinion. ;p